Well-drilling apparatus.



L. SCHULTZ.

WELL DRILLING APPARATUS. APPLICATION FILED smmzs, 1909.

35., i fitter/nury; QZMM THE NORRIS PETERS col; WASHINGTON, n. :4

L. SCHULTZ. WELL DRILLING APPARATUS.

APPLICATION. FILED SEPT. 23,1909.

Patented July 5, 1910.

3 SHEETS-SHEET 2.

Ti JE NORRIS PETERS co., WASHINGTON, a. c.

I L. SCHULTZ. WELL DRILLING APPARATUS.

APPLICATION TILED SEPT. 23, 1909.

Patented July 5, 1910.

' a SHEETS-SHEET a.

. I gnzn ioz 1m: NORRI; PETERS co., nmsumdrm 5 c.

LAWRENCE SCHULTZ, 0F BUFFALO, NORTH DAKOTA.

WELL-DRILLING- APPARATUS.

Specification of Letters Patent.

Patented July 5, 1910.

App1ication filed September 23, 1909. Serial No. 519,198.

To all whom it may concern:

Be it known that I, LAWRENCE SoHULTz, a citizen of the United States, residing at Buffalo, in the county of Cass and State of North Dakota, have invented certain new and useful Improvements in VVell-Drilling Apparatus, of which the following is a specification.

My invention especially relates to machines for drilling wells, such as oil wells, and the object of my invention is to provide improved means whereby the drill rope may be lowered rapidly and raised more slowly, whereby the drill rope may be easily wound or unwound, and whereby another rope used for lowering and raising the drill rods or the sand pump or other parts of the drilling apparatus may be easily raised.

In the accompanying drawings, Figure l is a plan view of my improved apparatus. Fig. 2 shows a side elevation of the same. Fig. 3 is a detail view in plan of a modification. Fig. 4 shows a longitudinal section of the apparatus shown in Fig. l: and Fig. 5 shows an end elevation of the apparatus shown in Figs. 1, 2 and 4.

The foundation frame A of the apparatus may be constructed in any suitable way, as may also the derrick frame B. The frame A is preferably adapted to support a suitable engine, such as a steam engine or gasolene engine, indicated by dotted lines at C in the drawings. The walking beam D is pivoted at d to the frame and it is connected at its front end by a link E with a crank F on a shaft G which is driven in the manner hereinafter described. The main driving shaft H is mounted in suitable bearings in the main frame and carries a pulley I which may be belted, as shown, to the engine C, and the shaft H carries a pinion J meshing with a spur wheel K of larger size on a shaft L parallel to the shaft H and carrying an elliptical gear M which meshes with a pinion N eccentrically secured to the shaft G. By this arrangement of gearing, as the shaft H is continuously revolved, a rotary motion at a higher speed is given to the shaft L, and the shaft G is rotated in such manner as to oscillate through its crank F the walking beam K in such a way that the drill which is connected with the walking beam, in the manner before described, is lowered rapidly and lifted more slowly, but both movements of the drill are positive.

The drill rope N extends upwardly in the derrick over a pulley O at the upper end thereof and down to a pulley P at the front end of the walking beam D. From the pulley P the drill rope passes to a winding drum or Windlass Q mounted loosely on a shaft It arranged in suitable bearings at the rear end of the apparatus. By revolving the drum in the proper direction the rope may be wound or unwound and the drill raised or lowered to any desired extent independently of the movements given to it by the walking beam. The shaft R carries a sprocket wheel S which has a tongue and groove connection with the shaft R so as to always rotate with the shaft, but it is capable of sliding endwise thereon. The sprocket wheel S is connected by a chain 8 with a sprocket Wheel S on the shaft L so that during the opera tion of the apparatus the shaft R is continuously revolved.

U indicates aworm-wheel rigidly attached to the drum Q but loose on the shaft R, and U indicates a worm operated by a handle u. By means of these last mentioned devices the drum may be turned to a slight extent to adjust the drill rope. The worm may be held in engagement with the worm-wheel U by means of a bolt u so as to prevent rotation of the drum or Windlass during the drilling operation, but by sliding the shaft of the worm wheel in its support, U the worm may be held away from the wormwheel, and thus the drum maybe turned on the shaft R when it is in engagement with the sprocket wheel S. Clutch devices WV are provided between the worm-wheel U and the sprocket-wheel S and by means of a shifting lever V the sprocket-wheel may be moved endwise on the shaft R so that it is coupled to the winding drum, and when this is the case, the winding drum may be revolved with the shaft R and the drill rope wound up or raised. 7

X indicates another rope which may be used for raising and lowering the drill rods, sand pump or other parts of the a paratus. Thisrope extends over the pulley (which is a double pulley, there being two sheaves arranged side by side) and it passes thence to a grooved pulley Y which I call a cathead. This may be connected, when desired, by means of clutch mechanism W with the sprocket-wheel S, and when so connected may be used to wind up the rope X. The

1'0. r 111 a well drllling-apparatus, the comb nael tion of a supporting'frame, a pivoted vertically moving walkingbeam carried therepulley Y may', however, be made tofrotate continuously and therope X need only be connected thereto when it is desir ed to raise it. Instead of connecting the pulley or cathead it with the shaft B, it may be arranged on-Ya separate shaft Z which may be driven in any 'suitableway by sprocket gearing, as

drill-rope connected with j. beam, a winding drum to which the drillindicated at Z. If desired the winding drum. may be operated by acrank Q};

" I claim as my'invention':

1 37,13, power'shaft, a crank shaft connected with the walking heam,'gearing connecting the power shaft: with the crank shaft, a the walking arope is connected, a sprocket-wheelmount-' ed to rotatew'th'said last mentioned shaft j but adapted'to slide endwise thereon, gearing connecting this wheel with the power a shaft, a pulley or cat-head loosely mounted on the shaft of'the winding drum, clutch mechanism between the cat-head and the spr'ocketwheelon the shaft of the winding drum, clutch mechanism between such sprocket-wheel and the .wlndmg '(1111111,

means for'shifting the sprocket-wheel in opposite directions to cause 1t to operatively connect with either the windlng drum or the cat-head, a Worm wheel rigidly connected with the winding drum, a Worm eugaging therewith and adapted to move the drum. in either direction to lengthen or shorten the drill rope, and means for hold- 

